Artillery / Surface to surface missiles / S-2 Sopka

S-2 Sopka

General Facts

  • TYPE
    Coastal defense system

  • ORIGIN
    USSR

  • NICKNAMES
    SS-C-2a Salish (NATO designation for fixed site variant)
    SS-C-2b Samlet (NATO designation for mobile variant)
    4K87 (GRAU designation)

  • DESIGNED
    1955 - 1958

  • DESIGNER
    OKB-155

  • PRODUCTION
    1958 - 1960's

  • PRODUCERS
    USSR

  • QUANTITY
    At least 100 launcher and 500 missiles produced. Production complete.

  • UNIT COST
    Unknown

  • CHARACTERISTICS
    Powerful high explosive warhead
    Dual mode seeker in upgraded S-2 missiles
    Mobile system with some off road ability
    Vulnerable to interception due to size and low speed
    High altitude flight profile increases odds of detection
    Seeker vulnerable to countermeasures and clutter
    No shoot-and-scoot ability due to long set up time
    Radar sets limited engagement to 1 or 2 targets per battery

Introduction

The S-2 Sopka is an early Cold War era coastal defense system of Soviet origin. It was developed in the late 1950's. The anti-ship missile used in the S-2 Sopka system is derived from the KS-1 Komet (NATO: AS-1 Kennel) air launched anti-ship missile. Early production models were fixed site models known as Strela, Russian for Arrow, and known by NATO as the SS-C-2a Salish. The main production model is the S-2 Sopka, which is a mobile version and known by NATO as the SS-C-2b Samlet.

Layout

The S-2 Sopka is a land based coastal defense system built around the S-2 missile, a land based version of KS-1 Komet air launched anti-ship missile. The KS-1 missile was developed only a few years earlier and was in turn derived from the MiG-15 fighter jet airframe. The S-2 missile is launched from a large fixed site or trailer mounted launch rail.

Guidance

The S-2 missile uses active radar homing. Upgraded missiles added an infrared seeker alongside the radar homing system. At launch the S-2 uses a pre-planned inertial flight profile at high altitude. The flight profile can be updated mid course. In the terminal phases the S-2 uses active radar homing system, either with or without infrared augmentation.

Firepower

The S-2 Sopka system has a reported practical minimum range of 15 km and maximum range of 90 km. Maximum range depends on the selected flight profile and radar horizon. In theory the maximum range is 115 km. The S-2 missile flies at subsonic speed and carries a heavy 600 kg high explosive warhead. Test launched indicated a 70 to 80% hit rate. The dimensions, low speed and high altitude flight profile make the S-2 missile vulnerable to interception by aircraft, surface to air missiles and close in weapon systems.

Mobility

The S-2 Sopka is a mobile coastal defense system, but is not suited for shoot-and-scoot operations. Set up time is at least 30 minutes, and probably much longer in practice. All components of the S-2 Sopka are towed KrAZ-214 and ZIL-157 tactical trucks. The earlier Strela system uses fixed site launchers and is not considered mobile.

Users

The S-2 Sopka was initially adopted by the USSR in the late 1950's and was widely exported to Soviet allies in the early 1960's. The S-2 Sopka was transfered to Cuba alongside the similar looking FKR-1 tactical missile during the Cuban missile crisis. The S-2 Sopka was used operationally during the 1973 Yom Kippur war by Egyptian forces. The S-2 Sopka was supplemented by the more capable 4K44 Redut (NATO: SS-C-1 Sepal) and later by the more mobile 4K571Rubezh (NATO SS-C-3 Styx).

Variants

S-2 Sopka coastal defense system

The S-2 Sopka coastal defense system is based around the S-2 missile and consists various components.

Strela: Early production model, developed as fixed site system. Introduced in 1957, but tested as early as 1956. Tests indicated that it was easy to develop a mobile trailer mounted version of this system. The fixed site model was not exported.
S-2 Sopka: Standard production model with trailer mounted launch rails and radar systems. Introduced in 1958.

A typical S-2 Sopka battery consists of the following components:
4x B-163 trailer mounted launch rails. The trailer has two axles with double wheels, two jacks and two outriggers. The launch rail holds a single S-2 missile and can be rotated -85 to +85 degrees.
8x PR-15 single axle trailers used to transport and reload S-2 missiles.
1x Mys, Russian for Cape trailer mounted target detection radar.
1 or 2x Burun trailer mounted target ranging radar.
1 or 2x S-1M trailer mounted fire control radar.

  • Specifications:
  • S-2
TypeAnti-ship missile
Diameter1.2 m body, 4.8 m wingspan
Length8.3 m
Weight3.419 kg at launch
GuidanceInertial first phase with mid course corrections
Semi-active radar homing
Infrared seeker with 10 km daytime range and 5 km at night
Warhead600 kg HE
PropulsionRD-500K turbojet engine, solid propellant booster rocekt
Speed1.050 km/h max
Range15 km (practical minimum), 95 km (practical maximum), 115 km (theoretical maximum)
Altitude-
Engagement envelope-
Remarks400 to 1.200 m flight altitude, no low level flight in terminal phase

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